The internet

Question 1

what is the internet

Answer 1

a network of interconnected networks set up to allow computers to communicate with each other globally

Question 2

when can the internet be used without the world wide web

Answer 2

• using email protocols like SMTP to send messages and IMAP to receive them
• file sharing
• voice calls
• gaming
• messaging apps

Question 3

structure of the internet - backbone

Answer 3

• the backbone is the main part of the internet
• this is a set of dedicated connections that connect several large networks at various parts of the globe
• each of these points are then connected to other regional networks, usually controlled by ISPS (internet service providers)

Question 4

what are ISPs

Answer 4

Internet service providers connect to the backbone and distribute the internet connection to smaller providers who then provide access to individual end users/homes

Question 5

structure of the internet - internet addresses

Answer 5

• each device on a network needs to be uniquely identified so that data can be sent to the correct destination
• internet addresses are unique numerical or alphanumerical identifiers used to identify devices or websites on the internet
• they use the IP address system

Question 6

structure of the internet - internet registries

Answer 6

• ensure that a particular domain name is only used by one organisation
• they manage and maintain records of domain names and IP allocations

Question 7

Structure of the internet - URL’s

Answer 7

A UNIFORM RESOURCE LOCATER is the full address for an internet resource.
it specifies the location/address of a resource on the internet

Question 8

Structure of the internet - Domain names and the Domain name system

Answer 8

a domain name identifies the area or domain that an internet resource resides in
- these are structured into a hierarchy of smaller domains

Question 9

what is a fully qualified domain name

Answer 9

one that includes the host server name, eg www, mail,
- www.blahblah.com

Question 10

structure of the internet - IP addresses

Answer 10

• an IP or internet protocol address is a unique address that is assigned to a network device
• the IP address indicates where a packet of data is to be sent or has been sent from